Ok I Have 94 blazer and it doesnt wanna turn over i can get it to run for a little bit then it shuts off then after a few turns of the key to get the pump to kick on it works then shuts right off or let it sit for a while then it starts runs for like 1 minutes then chokes it self out i replace the truck with a new fuel pump,fuel filter,MSD cap and rotor,MSD plug Wires,MSD coil, New Plugs autolite platnium,New Battery.. ran fine for a month or two with this stuff and now it wont run right and wnt run when the tank is at a little under the half mark can anyone help

 

Maybe you got a bad (new) fuel pump? Have you checked the EGR to see if it's clogged? Not sure, just throwing out some ideas....

 

Could be a MAP or MAF sensor cause if they dont see air coming in, they dont tell the fuel pump to send fuel. disconnect one or the other, and if it keeps an idle that could be your problem... That or your intake pipe is very loose.

 

yeah the fuel pump i had in it still did it i was thinking what about the fuel pump regulator